Results 81 to 90 of about 995 (187)

Photometric Metallicity and Distance for the Two RR Lyrae in Segue II and Ursa Major II Dwarf Galaxies Based on Multiband Light Curves

The Astronomical Journal
Multiband light curves of two RR Lyrae variables in Segue II and Ursa Major II ultrafaint dwarf galaxies were collected from near simultaneous observations using the Lulin One-meter Telescope in Vgri bands.
Chow-Choong Ngeow, Anupam Bhardwaj
doaj   +1 more source

Predicting light curves of RR Lyrae variables using artificial neural network based interpolation of a grid of pulsation models

, 2023
Nitesh Kumar, Anupam Bhardwaj, Harinder P. Singh, Susmita Das, M. Marconi, Shashi M. Kanbur, P. Prugniel   +6 more
openalex   +2 more sources

Stellar Atmospheric Parameters of ∼11,000 RR Lyrae Stars from LAMOST Spectra

The Astrophysical Journal Supplement Series
Accurate determination of the stellar atmospheric parameters of RR Lyrae stars (RRLs) requires short individual exposures of the spectra to mitigate pulsation effects.
Jiangtao Wang, Jianrong Shi, Jianning Fu, Weikai Zong, Chunqian Li   +4 more
doaj   +1 more source

The Blazhko RR Lyrae variables and phase modulation in binary systems [PDF]

, 2017
Hiromoto Shibahashi
openalex   +1 more source

Color–Magnitude Diagram of NGC 205 and Its RR Lyrae Variables

The Astronomical Journal
We present the deepest color–magnitude diagram (CMD) for NGC 205 in the F606W (≈ V ) and F814W (≈ I ) filters. Our archival Hubble Space Telescope/Advanced Camera for Surveys field is centered ∼3 $\mathop{.}\limits^{{\rm{^{\prime} }}}$ 8 northwest of the
Ata Sarajedini
doaj   +1 more source

Possible Evolutionary Interpretation of the Dependences on the Diagrams for RR Lyrae Variables [PDF]

, 1973
V. P. Goranskij
openalex   +1 more source

Analysing periodic amplitude changes in RR Lyrae and other types of variable stars [PDF]

, 2008
E. Guggenberger, K. Kolenberg, M. Breger
openalex   +1 more source

Classification for 969 Double-mode RR Lyrae Stars from Zwicky Transient Facility

The Astrophysical Journal Supplement Series
RR Lyrae (RRL) variable stars are cornerstone distance indicators. In particular, double-mode RR Lyrae (RRd) stars enable period–luminosity relations (PLRs) that are less sensitive to metallicity, reducing systematic biases in distance measurements ...
Jianxing Zhang, Xiaodian Chen, Shu Wang, Jiyu Wang, Licai Deng   +4 more
doaj   +1 more source

ANCIENT STARS BEYOND THE LOCAL GROUP: RR LYRAE VARIABLES AND BLUE HORIZONTAL BRANCH STARS IN SCULPTOR GROUP DWARF GALAXIES [PDF]

, 2009
G. S. Da Costa, M. Rejkuba, H. Jerjen, E. K. Grebel   +3 more
openalex   +1 more source

Kinematics of Distant Milky Way Halo RR Lyrae Stars out to 160 kpc

The Astrophysical Journal
We present a kinematical study of the outer halo ( r _GC  ∼ 60–160 kpc) of the Milky Way (MW) based on spectroscopy of 55 RR Lyrae stars using the Echelle Spectrograph and Imager instrument on the Keck II telescope.
Yuting Feng, Puragra Guhathakurta, Eric W. Peng, Emily C. Cunningham, Patrick Côté, Laura Ferrarese, Stephen D. J. Gwyn   +6 more
doaj   +1 more source